If I have several indesign CS5 documents open and I switch to another application and then swicth back, the document that I was working on is no longer displayed - instead Im presented with which ever other open document happens to be the farthest to the right in the document tabs at the top of the window. I can't select or do anything on that document as Indesign still recognises that the other document is active, but until I click on the document tab the display just stays on the wrong file.

This only seems to happen when the application I switch to is in a different 'space' (using OSX 10.6.8) and is very frustrating!